The quantum divide between Bitcoin and Ethereum
Quantum computing has long been viewed as a distant, largely theoretical threat to blockchain systems. However, that perspective is now starting to change.
With major technology companies such as Google establishing timelines for post-quantum cryptography, and crypto researchers re-examining long-held assumptions, the discussion is shifting from abstract theory to concrete planning.
However, Bitcoin and Ethereum, two major blockchain networks, are addressing the quantum computing threat in different ways. Both networks depend on cryptographic systems that could, in principle, be compromised by sufficiently powerful quantum computers. However, their approaches to addressing this shared vulnerability are evolving in markedly different directions.
This divergence, often referred to as the “quantum gap,” has less to do with mathematics and more to do with how each network handles change, coordination and long-term security.
Did you know? Quantum computers do not need to break every wallet at once. They only need access to exposed public keys, which means older Bitcoin addresses that have already transacted could theoretically be more vulnerable than unused ones.
